dear dev-luatex list,
I'm an estimator of (La)Tex and the
work done Donald Knuth -- as well as the work that
you all are doing -- and I'm following this list
since a while.
Few time ago I have been in touch with
Patrick Gundlach of https://www.speedata.de/en/
a publishing system based on LuateX.
My concern and goal would be to be able
to control the looseness of paragraphs while
paging a text, so to minimize widows and orphans
in the resulting document.
In practical terms, when the system finds that
a widow is being produced, then it tries to make
the relevant paragraph more dense, or even
more than one, in order to fit all the text
in the page. (This is not currently possible using Speedata)
I would like to know whether LuaTex offers such
control, on in other terms whether the pagination
algorithm is as sophisticated as the famous
linebreak algorithm of Tex/Latex. (thing in
my opinion highly desirable)
Alternatively, I would like to know what files
I have to check in the distribution of Lua
to reach such a result.
Thank you and kind regards
(Thomas)
https://istitutoculturaitaliana.org/
Sent: Friday, August 03, 2018 at 5:51 PM
From: "Hans Hagen" <j.hagen@xs4all.nl>
To: "Marcel Krüger" <tex@2krueger.de>, dev-luatex <dev-luatex@ntg.nl>
Subject: Re: [Dev-luatex] nodelist based tex.saveboxresource
On 8/3/2018 1:09 AM, Marcel Krüger wrote:
> Hello,
>
> I want to suggest extending the tex.saveboxresource interface to accept a hlist or vlist node as an alternative to a box number as first argument.
> Currently creating a boxresource from Lua node list requires saving the list in a TeX box register, only to delete that register again by tex.saveboxresource.
> A direct way to transform a h/vlist into a boxresource would make such code easier and avoid potential side effects from changing the TeX registers.
> An experimental patch with a suggested implementation is attached.
ok, makes sense (but not entirely ok that way but i can fix it)
> I also attached a patch implementing a node.scan method which I think would be another nice addition for LuaTeX: It scans a box with rules similar to `\setbox0`
> and returns the node. This allows passing box-like material to LuaTeX without requiring box registers.
this is tricky stuff so i need to have a close look at side effects
(it's also more relatex to token scanning so belongs in another namespace)
i'll have a go at it
Hans
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